Chem Fall 2007

Published

I'm hoping we can make this a sticky and have a new Chem group for Fall 2007. I'm starting August 23. I'm taking Chem (of course), A&P 1, and Nutrition. Anyone else up for a Chem group?

Good Luck to us All!!:yeahthat:

Hi everyone. I'm new to this. I am taking Microbiology, and Statistics this semester. Hopfly all will go well. So ready to get this over with, ready to become a nurse.:balloons:

Up Vote Up Vote ×
Specializes in None.

Im so upset with myself, I got a D on my test!!! And its not because I didnt know what I was doing, I just made dumb mistakes like writing the answer's in the wrong place. Thoroughly upset with myself, *sighs* Better luck next time!

Up Vote Up Vote ×

I got a C on my first test, but right now I'm fine with that. It's not going to be an easy course for me.

Up Vote Up Vote ×

Well, I have my first Chemistry test on Wednesday. I have been studying my tail off!!! I am having difficulty with Mol problems. Anyone have any suggestions as to where to find help with these?? I am also having difficulty with the shorthand of electronic configurations.

Up Vote Up Vote ×
Specializes in being a Credible Source.
Well, I have my first Chemistry test on Wednesday. I have been studying my tail off!!! I am having difficulty with Mol problems. Anyone have any suggestions as to where to find help with these?? I am also having difficulty with the shorthand of electronic configurations.

I have a suggestion...post a couple of problems here and explain what you're having trouble with. I'll bet you'll get some good help.

What is the problem that you're having with electron configurations?

Up Vote Up Vote ×
Specializes in Home Care, Hospice, Assisted Living.

I am taking a Chemistry and Algebra starting next week monday and thursday as my pre reqs.

Also do not take Chemistry & A&P. Take A&P alone if you can. you'll be much happier. A&P is hard (alot alot alot of memorizing).

Up Vote Up Vote ×

]Hi! I'm new here...I'm taking A&P and Fund of Chem this semester and the second part of each class next semester to complete my science requirements and apply for the accelerated nursing BA program at KSU. I have exams in each class this week. I'm hoping one of you can help with my chemistry review...The problem is "The density of methanol at 20 degrees C is 0.791 gm/ml. What is the mass, in grams, of a 280 ml sample?" Any help would be greatly appreciated.

Up Vote Up Vote ×

What is your specific problem with the shorthand notation Kristi? My prof spent 2 class sessions going over it and I get it. I would be happy to assist you.

Up Vote Up Vote ×

Actually, I think... I may have figured it out. What was confusing me was the part where you can use the noble gas element abbreviation instead of the element name. I think I figured it out that you can use the nobel gas (for example Ne (Neon) for Na (Sodium) because the Ne electronic configuration is the same as the beginning of the Na electronic configuration. However, I still am not quite sure how a person knows which noble gas to use. Like how the person would know to use Neon instead of like Argon?

Unfortunately, I (and many other students) are having a difficult time understanding our instructor because she has a very thick accent. I feel that if I ask her anything I will not understand what she says anyway. She also will only see you by appointment, she does not have office hours. Therefore, I do not feel that I can ask her questions. The TA we have available to us also has a very thick accent (a different one) and he has office hours when I am working. I really feel that I have to rely a lot on supplemental chemistry books and other people to explain it to me. God help me!!:uhoh3:

I am also having trouble with Avogado's number thing.:uhoh3: I understand that it is 6.02x10 to the 23rd power and that it is an amount of something (like a dozen.) However, what seems to be confusing me is what numerical relationship to use (kind of like the factor-unit/factor-label/dimensional analysis thing.

For example, in one of the problems, the solution manual I have states that I need to find the number of Argon atoms in a 20.5-g sample of argon. The three numerical relationships that we can choose to use are 6.02x10 to the 23rd power Ar atoms=39.95 g Ar, 1 mol Ar atoms=6.02x10 to the 23rd power Ar atoms and 1 mol Ar atoms=39.95 g Ar. The way they set the problem up is as follows:

20.5-g Ar [6.02x10 to the 23rd power Ar atoms/39.95 g Ar] = 3.09 x 10 to the 23rd power atoms Ar.

What I do not understand is how you would know to use 6.02x10 to the 23rd power Ar atoms/39.95 g Ar rather than 1 mol Ar atoms/39.95 g Ar because it would appear to me (unless I am not seeing something) that both factors would cancel out the units?

Any help would be sooo appreciated. Thanks.

Up Vote Up Vote ×
Specializes in being a Credible Source.
]Hi! I'm new here...I'm taking A&P and Fund of Chem this semester and the second part of each class next semester to complete my science requirements and apply for the accelerated nursing BA program at KSU. I have exams in each class this week. I'm hoping one of you can help with my chemistry review...The problem is "The density of methanol at 20 degrees C is 0.791 gm/ml. What is the mass, in grams, of a 280 ml sample?" Any help would be greatly appreciated.

Density is the mass per unit volume. Therefore, the general equation is D = m / V. In your case, you are given the density (D) and the volume (V) and are being asked to determine the mass (m).

D = m / V --> 0.791 g/ml = m / 280 ml --> (280 ml) x (0.791 g/ml) = m

The volume units (ml) cancel and the answer is: m = 221 g

Up Vote Up Vote ×

I am taking an "Intro" to Chemistry course. aka Chemistry for Dummies. The professor is great, and I think that can make all the difference. May you all have one as kind as mine!

Up Vote Up Vote ×
Specializes in Cardiothoracic.

Woot! 100% on my first Organic Chemistry exam! I am so surprised!

Up Vote Up Vote ×
+ Join the Discussion